... connected Modular Multilevel Converter Based STATCOM Topology Suitable for · · · 573Fig. 1. Circuit structure of the MMC based STATCOM and the way of itsconnection to the network.to a medium- voltage ... Electronics, Vol. 10, No. 5, September 2010JPE 10-5-15 Modular Multilevel Converter Based STATCOM Topology Suitable for Medium- Voltage Unbalanced Systems Hassan Mohammadi Pirouz†and Mohammad Tavakoli ... mean voltages even during the transient states.Key Words: DC voltage balancing, Medium voltage, Modular multilevel converter, STATCOM, Unbalanced currentsI. INTRODUCTIONNowadays, multilevel converters...